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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

Uronium hydrogen sulphate is of low acute toxicity to fish.
Uronium hydrogen sulphate readily degrades to urea and sulfuric acid and/or sulfate ions in the environment and these degradation products are considered in the assessment:
- For sulfates (as calcium salt): 96-hr LC50 > 100 mg/L (equivalent to 79 mg/L as anhydrous). No symptoms of intoxication were observed ;
- Urea is of very low acute toxicity to fish with 96hr LC50 values higher than 6810 mg/L.
It can be concluded that Uronium hydrogen sulphate and its degradation products are not acutely toxic to fish.

Key value for chemical safety assessment

Additional information